https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120479
--- Comment #2 from Paolo Bonzini ---
a7 is from line (1) which is a sltu instruction, so it has itself only bit 0
set.
I think it should be possible to generate (if_then_else (eq/ne X (const_int 0))
Y (const_int 0)) from (and (eq/ne X (const_i
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120479
Bug ID: 120479
Summary: missed opportunity to generate czero.nez
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99973
Paolo Bonzini changed:
What|Removed |Added
CC||bonzini at gnu dot org
Last reconfirme
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59474
Paolo Bonzini changed:
What|Removed |Added
Ever confirmed|0 |1
Last reconfirmed|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118465
Paolo Bonzini changed:
What|Removed |Added
Resolution|INVALID |---
Status|RESOLVED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118465
Paolo Bonzini changed:
What|Removed |Added
CC||bonzini at gnu dot org
--- Comment #1 f
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117922
--- Comment #22 from Paolo Bonzini ---
Yes, I suggested the MD problem because it did solve gambit performance issues
with fwprop for good, but RTL-SSA is certainly applicable.
Also, once all RD uses are converted to RTL-SSA it should really be
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117922
--- Comment #18 from Paolo Bonzini ---
> Can someone help me find what Paolo referenced as "the multiple definitions
> DF problem
> that was introduced for fwprop in 2009"?
Yes, the patch is at
https://gcc.gnu.org/pipermail/gcc-patches/2009-J
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117922
Paolo Bonzini changed:
What|Removed |Added
CC||bonzini at gnu dot org
--- Comment #15
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104067
Bug ID: 104067
Summary: wrong code compiling QEMU
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: blocker
Priority: P3
Component: middle-end
10 matches
Mail list logo
